Double-handle, stackable, pourable product container

Abstract

A plastic blow molded pourable product container is constructed to support the combined weight of additional like containers stacked on top of the container, and is also constructed to efficiently use a three dimensional space occupied by a stack of containers and to resist relative movement between adjacent containers assembled together in a three dimensionally arrayed stack of the containers.

The invention claimed is: 
     
       1. A pourable product container comprising:
 a rectangular upwardly sloped top surface having a cylindrical neck projecting from a center of the top surface, the neck surrounding an opening to an interior of the container; 
 a cap on the neck; 
 a rectangular bottom surface opposite the top surface, the bottom surface being upwardly sloped toward a center of the bottom surface; 
 four rectangular side surfaces extending between the top surface and the bottom surface, two of the side surfaces having pluralities of consecutive concave groove surface sections immediately adjacent on another and having widths sequentially arranged side by side extending across the entire width of the two side surfaces with only narrow ridges formed where adjacent groove surface sections and lengths extending across the two side surfaces between that merge into the top surface and the bottom surface; another two of the side surfaces having pluralities consecutive of convex rib surface sections immediately adjacent on another and having widths sequentially arranged side by side extending across the entire width of the other two side surfaces with only narrow valleys formed where adjacent rib surface sections and lengths extending across the other two side surfaces between that merge into the top surface and the bottom surface; 
 a pair of rounded side corner surfaces extending between the top surface and the bottom surface and merging into the top surface and the bottom surface on opposite sides of the container, each of the side corner surfaces separating two adjacent side surfaces of the four side surfaces and merging into the two adjacent side surfaces; and 
 a pair of openings formed into each of the two adjacent side surfaces on opposite sides of each of the pair of side corner surfaces separating the two adjacent side surfaces, the pair of openings connecting through the container interior and forming a handle on each of the pair of side corner surfaces. 
 
     
     
       2. The container of  claim 1 , further comprising;
 the container being constructed entirely of plastic. 
 
     
     
       3. The container of  claim 1 , further comprising:
 a second pair of rounded side corner surfaces extending between the top surface and the bottom surface and merging into the top surface and the bottom surface on opposite sides of the container, each of the second pair of side corner surfaces separating two adjacent side surfaces of the four side surfaces and merging into the two adjacent side surfaces; and, 
 a pair of grooves depressed into the second pair of side corner surfaces with each groove extending along the side corner surface between the top surface and the bottom surface, the grooves adding structure and additional material to the second pair of side corner surfaces that reinforce the second pair of side corner surfaces. 
 
     
     
       4. The container of  claim 1 , further comprising:
 a pair of separate troughs depressed into the top surface; 
 a pair of separate ridges projecting outwardly from the bottom surface, the pair of ridges of a first upper container extend into and are received inside the pair of troughs of a second lower container when the bottom surface of the first upper container is positioned on and supported by the top surface of the second lower container. 
 
     
     
       5. The container of  claim 1 , further comprising:
 the concave groove surface sections and the convex rib surface sections being complementary wherein the convex rib surface sections of a first container will fit into the concave groove surface sections of a second container when one of the two side surfaces having the pluralities of convex rib surface sections of the first container is positioned against one of the other two side surfaces having the pluralities of concave groove surface sections of the second container. 
 
     
     
       6. The container of  claim 1 , further comprising:
 the top surface, the bottom surface and the four side surfaces together define a cubic configuration of the container. 
 
     
     
       7. A pourable product container comprising:
 a rectangular, upwardly sloped top surface having a cylindrical neck projecting from a center of the top surface, the neck surrounding an opening into an interior of the container; 
 a cap on the neck; 
 a rectangular bottom surface opposite the top surface, the bottom surface being upwardly sloped toward a center of the bottom surface; 
 four rectangular side surfaces extending between the top surface and the bottom surface, two of the side surfaces having pluralities of consecutive concave grooved surface sections immediately adjacent one another and having widths sequentially arranged side-by-side extending completely across the entire width of the two side surfaces with only narrow ridges formed where adjacent groove surface sections meet, and lengths extending across the two side surfaces that merge into the top surface and the bottom surface; another two of the side surfaces having pluralities of consecutive convex rib surface sections immediately adjacent one another and having widths sequentially arranged side-by-side extending across the entire width of the other two side surfaces, with only narrow valleys formed where adjacent rib surface sections meet, and lengths extending across the other two side surfaces that merge into the top surface and the bottom surface; 
 a first pair of rounded side corner surfaces extending between the top surface and the bottom surface and merging into the top surface and the bottom surface on opposite sides of the container, each of the first pair of side corner surfaces separating two adjacent side surfaces of the four side surfaces and merging into the two adjacent side surfaces; 
 a pair of grooves depressed into the first pair of side corner surfaces with each groove extending along the side corner surface between the top surface and the bottom surface, the grooves adding structure and additional material to the first pair of side corner surfaces that reinforce the first pair of side corner surfaces; 
 a second pair of rounded side corner surfaces extending between the top surface and the bottom surface and merging into the top surface and the bottom surface on opposite sides of the container, each of the second pair of side corner surfaces separating two adjacent side surfaces of the four side surfaces and merging into the two adjacent side surfaces; and, 
 a pair of openings formed into each of the two adjacent side surfaces on opposite sides of each of the second pair of side corner surfaces separating the two adjacent side surfaces, the pair of openings connecting through the container interior and forming a handle on each of the second pair of side corner surfaces. 
 
     
     
       8. The container of  claim 7 , further comprising:
 the container being constructed entirely of plastic. 
 
     
     
       9. The container of  claim 7 , further comprising:
 a pair of separate troughs depressed into the top surface; 
 
       a pair of separate ridges projecting outwardly from the bottom surface, the pair of ridges being positioned on the bottom surface and being dimensioned whereby the pair of ridges of a first upper container extend into and are received inside the pair of troughs of a second lower container when the bottom surface of the first upper container is positioned on and supported by the top surface of the second lower container.